Weather-strip.



overcomef-in the present invention,

- the strip is formed. with a yieldingbase,

; g-which"at all times engages the'medge of the 3] a sash is brought to groove at two'poi ts, thereby insuring an airm PATENT OFFICE.

' FREDERICK Y. Dawson. or WASHINGTON, DISTRICT or COLUMBIA.

, WEATHER-STRIP.

Be it knownthat I, FREDERI K Y. DAwe 5 invented certain new and useful Im rove ments inWeather-Strips, of which the ollowing is a specification.

The invention. relates to improvements in "-weather-strips, and to the class of packing weather-strips.

simple, cheap, durable, andeflicient strip of this character. 1 r

. .f 'Heretofore weather-stri s have been made with a flat base andza rib which enters a groove in the'sash'ybut this hasbeen found inefii- "ci'ent, for'the reason that when the sash and window-frame swell in dam of the strip enters and impinges on the bottom of the groove, or if .the rib is made short enough to allow for expansion of the sash qnthen 1t binds a ainst the base of the strip and causes consi erableinconvenience. Furweather the rib {,j fthermore, air and dust are liable to get past the "strips when the sash and frame shrink away from each other. These objections are wherein sash, and an upstandmg rib, which when the bear on it impingesthe tight and dust=proof window.

.. ,In the accompanying drawings isgshown several forms of the invention, in which- Figure l'is a'section'through'a part of. the

i sash and sill, showing the strip applied, but 1 not in operative engagement. ti'on through a part of the sash and sill, show 4"- Fig. 2 is a sec- ;ing.the stripi'n operative engagement. Fig. -3 is asection through a partof the sash and frame, sho' wing the strip 1n operative engagemerit, .4 is an enlarged rierspective view of.the-- form of strip shown in Figs. 5,1,6, and 7 are perspective views of parts oil thestrip embracing modifications f the invention.

.In the drawings, [2 the frame, the former being grooved at 8 to receive the rib of the strip in the usual man- The strip is formed of a flat stripv of sheet j metalbent longitudinall to form a. rib having parallelsti 'ips 4 4, t the rib being'bent into a understood that the bead e u er portion of bea i It will be with and a plane rib 4' may in Figs. 7 and 6. The stri Perforations 9' are portions to admit of the strip being nailed to The object of the invention isto provide a igs. 1, 2, and 3..

1' represents the sash, and

3 mav be dispensed Patented March a, 1906:

be used, as seen or flared downwardly an outwardly from the rib or web, as at 6 6. Horizontal portions 5 5 .are then formed, which'lie inthe same general plane with each other. inclined portions 6 6, together with the horizontal portions,

formed in the horizontal the frame. One side of the base is made wider than the other, which wide side 10 has the perforations -9, and is secured to the frame, leaving the other side 11 free to move on the face of the frame.

When the strip is applied to the vertical portions. of the. frame, it will assume and -maintain approximately in Fig. 3. It will be seen that when the sash shrinks in dry weather, the inclined portions 6'6 of the base being of the nature of a spring will follow the sash, keeping in close relation thereto, {thusforming a close joint and .exeluding all-air or dust that might seek to enter. Furthermore, the rib will assume a position (shown in Fig. 3) touching the groove at two points. the point .12, it would be checked at the .point13. i w

The strip as ap lied to the lower rail of the lower sash and th These form the base of the strip.

Should any air or dust passis then inclined the relation shown e upper rail of the upper sash would upon the sash being moved awa shovlr n in Fig. 1, but upon the sash being brought to bear upon the strip would engage with the inclined portions 6 6 of the base and force same to an approximately horizontal positiomcausing the free side 5 of the base to slide outward and inclining the rib 4, so as to touch the groove at 13 and 14, as best seen in Fig. 2. i 1

In Fig. 5 it will be-seen that one-sideof the base may be dispensed with. i r From the foregoing it will readilybe seen that a very eflicient weather-strip is made which insures a perfectly air-tightand dust-' proof window.

Further modifications or minor changes maybe made without departing from the sco e or principle of the invention. I

l'iaving thus describedmy invention, what I claim, and desire to secure by Letters Patcut, is

1.111 combination with a frame and a grooved sliding sash, a weather-strip comprising. a horizontal member provided with from the strip assume the position asno I securing means, an inclined spring member, a groove-closing portion consisting of parallel spaced walls connected by a curved portion, one of said walls being connected to said inclined spring member, and the other being free, the Whole of said groove-closing portion capable of lateral movement when pressure is exerted on the spring-inclined member.

2. A Weather-strip having a horizontal member provided with securing means, an inclined spring member, a groove-closing portion consisting of arallel spaced walls connected by a curve portion, one of said walls being connected with said spring-inclined member and the other being free.

FREDERICK Y. DAWSON.

Witnesses:

STANLEYB. GASTON, HARRY M. TEST. 

